RADIO REVIEW (16/Fr Year of Publication)
AN D RADIO REVIEW (16/fr Year of Publication) No. 458. WEDNESDAY, JUNE. 6TH, I928. VOL. XXII. No. 23. production, as did also the introduction of valves Editor: HUGH S. POCOCK. specially designed for low- frequency amplification. Assistant Editor: F. H. HAYNES. Editorial Offices: 1x6 -117, FLEET STREET, LONDON, E.C.4. Shortcomings of Loud -speakers. Editorial Telephone: City 9472 (5 lines). For quite a considerable time, however, the loud. Advertising and Publishing Offices: speaker remained a source of some disappointment to DORSET HOUSE, TUDOR STREET, LONDON, E.C.4. those who aimed at the ideal. Many of the early types Telephone: City 2847 (13 lines). 'telegrams: "Ethaworld, Fleet, London." of loud- speaker were, of course, excellent in their way, COVENTRY : Hertford Street. and were often superior in their performance 9btegrame- "Cyeliet, Coventry." Telephone to the sets 5210 Coventry. to which they were connected, but with BIRMINGHAM: Guildhall Buildings, Navigation Street. the improvement Teleprarne: "Autopress, Birmingham." Telephone: 2970 and 2971 Midland. in the receiver itself the shortcomings of the loud -speaker MANCHESTER : 260, Deansgate. became more apparent, and to -day it can be said that Te.egrante: "Ilife, Manchester." Telephone 8970 City (4 lines). it is the loud- speaker, and in particular the moving coi.' Subscription Rates : Home, 17s. 4d. ; Canada, 17s. 4d.; type, which has served to introduce a new standard in other countries abroad, 199. 6d. per annum. broadcast reproduction. As )many of the circuits and apparatus described in these pages are covcr:d by patents, readers are advised, before making use of then, to satisfy themselves With a well- designed receiver operating a modern coil - that they would not be infringing patents.
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